Search Results - (Author, Cooperation:M. Aydin)
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1Latest Papers from Table of Contents or Articles in PressM. Aydin ; K. R. Verhulst ; E. S. Saltzman ; M. O. Battle ; S. A. Montzka ; D. R. Blake ; Q. Tang ; M. J. Prather
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-08-13Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Antarctic Regions ; Atmosphere/*chemistry ; Biofuels ; Biomass ; Ethane/*analysis ; Fires ; *Fossil Fuels/history/utilization ; Geography ; Greenland ; History, 20th Century ; History, 21st Century ; Ice/analysis ; Methane/*analysis ; Models, Theoretical ; Snow/*chemistryPublished by: -
2Articles: DFG German National LicensesKonig, W.A. ; Aydin, M. ; Schulze, U. ; Rapp, U. ; Hohn, M. ; Pesch, R. ; Kalikhevitch, V.N.
Amsterdam : ElsevierStaff ViewISSN: 0020-7381Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesStaff View
ISSN: 0375-9601Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 0167-4838Keywords: (Trichoderma) ; Amino-acid sequence ; Peptaibol ; Peptide antibiotic ; Peptide separation ; TrichotoxinSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyMedicineType of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1432-1319Source: Springer Online Journal Archives 1860-2000Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Abstract A field study was carried out in the Cukurova Region, Southern Turkey to investigate the magnitude of the components of water balance, and the water uptake by cotton roots in relation to hydraulic properties of a clay soil. A plot cropped with cotton and with bare soil only were equipped with tensiometers, gypsum blocks, and access tubes for neutron probe to monitor soil water potential and water content. The hydraulic conductivity values, evaporation and drainage rates, and water withdrawal of roots were determined from field data with numerical calculations based on water flow equations. Results showed that the evaporation from bare soil was generally high during the three month period May to July varying between 4.5 and 1.0 mm/day. However, when soil water potential at 10 cm depth had decreased to -0.065 and -0.070 MPa in the drying phase, the evaporation from the soil decreased to 0.4 mm/day. The drainage rates were influenced by rainfall. The highest values of capillary flux toward the surface layer, and drainage rate from the cropped soil, were 2.0 and 1.8 mm/day respectively. Rates of water uptake by roots from the soil profile, not including the 0–10 cm layer, were high when compared with drainage and upward fluxes, changing between 7.7 and 1.4 mm/day during the experimental period. A good agreement between root length densities and water uptake was found; up to 80% of all roots were in the top 50 cm of the soil and 78% of the total water uptake was extracted from the same layer. Evapotranspiration was found to decline as a cubic function of the available water content of the top 120 cm of the soil profile.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1618-2650Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyDescription / Table of Contents: Summary Thiosulfate, a potential substrate for sulfuric acid forming thiobacilli, could be detected and quantitatively determined in corroded concrete sewer systems by differential pulse anodic-stripping voltammetry. The method proved to be specific and gave reproducible results for concentrations from 5 ppb to 3 ppm of thiosulfate in aqueous media.Notes: Zusammenfassung Thiosulfat, ein potentielles Substrat für Schwefelsäure bildende Thiobazillen, konnte in korrodierten Abwasserkanälen aus Beton mittles der differentiellen Puls-Anodic-Stripping-Voltammetrie (DPASV) nachgewiesen und quantifiziert werden. Die Methode erwies sich als spezifisch und ergab reproduzierbare Ergebnisse für Thiosulfatkonzentrationen zwischen 5 ppb und 3 ppm in wäßrigen Medien.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesKalayci, M. ; Alkan, A. ; Çakmak, I. ; Bayramoğlu, O. ; Yilmaz, A. ; Aydin, M. ; Ozbek, V. ; Ekiz, H. ; Ozberisoy, F.
Springer
Published 1998Staff ViewISSN: 1573-5060Keywords: bread wheat ; durum ; genotypical variation ; boron toxicity ; boron concentrationSource: Springer Online Journal Archives 1860-2000Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Abstract Experiments were carried out to study the differential responses of different wheat cultivars to boron toxicity in field, greenhouse and growth chamber conditions. In field trials carried out at two locations, both of which are known to contain toxic amounts of water-extractable B, significant correlations were obtained between toxicity symptoms and grain yields. The only durum cultivar included in this group of experiments (Kunduru 1149) was the most sensitive of the 21 cultivars trialed. The most tolerant cultivars were of local origin. Genotype-environment interaction was considerably large. Twenty-nine bread wheat and three durum wheat cultivars were compared in a greenhouse experiment with and without the application of 40 mg L-1 B. Again, the durums were the most sensitive cultivars. The most tolerant cultivars were either selections from local populations or had at least one parent of local origin. The detrimental effect of B on root dry matter production was much higher than on shoot dry matter (45 and 26%, respectively), but genotypical variation was greater in shoot growth retardation. While this implies the possible role of reduced translocation, high concentrations of B in the shoots of tolerant cultivars (though lower than in the sensitive cultivars) indicated the existence of other contributing mechanisms, such as tissue tolerance. Also, greater genotypical variation in older leaves showed that reduced uptake might be more important than reduced translocation in some cases. Due to the lack of correlation between results from the field and the controlled-environment studies, it was concluded that screenings should be undertaken in both situations as a means of verification. Another conclusion drawn was that symptom scoring for B tolerance was more reliable than measuring plant B concentrations.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 1618-2650Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyDescription / Table of Contents: Summary A gas-chromatographic procedure for the determination of volatile sulfur compounds related to the formation of the substrate for sulfuric acid producing thiobacilli is described. Volatile sulfur compounds from head-space samples of the sewer atmosphere are qualitatively and quantitatively determined with a sulfur-selective detector. The concentrations are correlated with the occurrence of concrete corrosion in sewage systems.Notes: Zusammenfassung Es wird ein gas-chromatographisches Verfahren zur Bestimmung flüchtiger Schwefelverbindungen beschrieben, die mittelbar an der Substratbildung für Schwefelsäure bildende Thiobazillen beteiligt sind. Flüchtige Schwefelverbindungen in Original-Luftproben aus Abwassersammlern werden mittels eines für Schwefel selektiven Detektors qualitativ und quantitativ bestimmt und mit dem Auftreten von Betonkorrosion in Abwasserkanälen korreliert.Type of Medium: Electronic ResourceURL: